Home / 28,250.87-38,984.85-15,503.76

Finding the Fourth Proportional to 28,250.87, 38,984.85 and 15,503.76

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Solution

The fourth proportional to 28,250.87, 38,984.85 and 15,503.76 is: 21,394.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.87 : 38,984.85 = 15,503.76 : x
  2. Step 2: Convert to fraction form
    28,250.87/38,984.85 = 15,503.76/x
  3. Step 3: Cross multiply
    28,250.87x = 38,984.85 × 15,503.76
  4. Step 4: Simplify right side
    28,250.87x = 604,411,758.04
  5. Step 5: Solve for x
    x = 604,411,758.04/28,250.87
  6. Step 6: Final answer
    x = 21,394.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.